论文标题
恒星簇的原始质量分离：二进制恒星的作用
Primordial mass segregation of star clusters: The role of binary stars
论文作者
论文摘要
年轻的星形区域的观察结果表明，恒星簇在出生时被完全隔离。随着星团动态发展，这些初始条件逐渐丢失。对于仅具有单星星和规范IMF的恒星簇，有人建议这些初始条件的痕迹在$τ_{\ rm V} $ 3到3.5个半质量放松时间之间消失。通过数值模型的方式，我们在这里研究了原始二元种群对原始质量隔离的丧失的作用。我们发现$τ_ {\ rm V} $似乎不取决于二进制星星分布，产生$ 3 <τ_{\ rm V} / t _ {\ rm rh} <3.5 $。我们还得出结论，完全质量隔离的簇即使与二进制组相比，即使与二进制组相比，与当今的ONC更兼容。
Observational results of young star-forming regions suggest that star clusters are completely mass segregated at birth. As a star cluster evolves dynamically, these initial conditions are gradually lost. For star clusters with single stars only and a canonical IMF, it has been suggested that traces of these initial conditions vanish at $τ_{\rm v}$ between 3 and 3.5 half-mass relaxation times. By the means of numerical models, here we investigate the role of the primordial binary population on the loss of primordial mass segregation. We found that $τ_{\rm v}$ does not seem to depend on the binary star distribution, yielding $3 < τ_{\rm v} / t_{\rm rh} < 3.5$. We also conclude that the completely mass segregated clusters, even with binaries, are more compatible with the present-day ONC than the non-segregated ones.
